David Arquette is sitting in all week on The Howard Stern Show and the subject of his estranged wife, Courteney Cox, is coming up a lot. At times, David tries to watch what he says (after he revealed too much last time), but it doesn’t seem to be working all that well!

And Howard also brought up the reports that Courteney had a “platonic” vacation with her Cougar Town co-star, Josh Hopkins, and Christa chimed in.

“This is what she told me from that trip to St. Barts. That ‘Josh could not get laid.’ That it was a very dry trip for him,” Christa said. “And it was the worst trip [for him] because he couldn’t get laid.”

Howard wondered how anyone could believe that Josh was trying to bang anyone but Courteney: “Why is everybody so naive?” Howard asked. “Everyone sounds like a robot here. You know, ‘We’re trying to figure it out. We’re trying to figure it out.’ I think it’s been figured out.”

“Yeah, I think so too,” David said with a shrug. “I think [Courteney] just hasn’t admitted to it. It’s a compatibility thing.”